Type-writing machine.



C. J. BOND.

TYPE WRITING MACHINE.

APPLICATION FILED APR.17| 19l5. 1 6 141 Patented Aug. 7,1917.

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WITNEEEEE: |NVENTE1F= HISATTEJRNEY C. J. BOND.

TYPE WRITING MACHINE.

APPLICATION FILED APR. l7. ms.

Patented Aug. 7, 1917.

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CHARLES J. BOND, 0F SYRACUSE, NEW YORK, ASSIGNOR, BY MESNE ASSIGNMENTS, TO REMINGTON TYPEWRITER, COMPANY, OF ILION, NEW YORK, A CORPORATION OF NEW YORK.

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Application filed April 17, 1915.

To all whom it may concern:

Be it known that I, CHARLES J. BOND, citizen of the United States, and resident of Syracuse, in the county of Onondaga and State of New York, have invented certain new and useful Improvements in Type- Writing Machines, of which the following is a specification.

My present invention relates to case shift-- ing mechanism for typewriting machines and its main object is to provide a new and ifimproved mechanism of the character speci- To the above and other ends my invention consists in the features of construction, combinations of devices and arrangements of parts hereinafter described and particularly pointed out in the claims.

In the accompanying drawings which illustrate the preferred form of my invention Figure 1 is a fragmentary front elevation partly in section of a typewriting machine embodying my invention.

Figs. 2 and 3 are operating views of certain of the case shifting devices.

Fig. 4 is a perspective view of the same.

As shown in Fig. 1 the main frame comprises a base 1, posts 2 and a top plate 3. Above the top plate is slidably mounted a carriage (not shown) carrying a platen 4c. Cooperative with the front face of the platen are a segmentally arranged series of type bars 5, each type bar having fixed to its free end a block 6 provided with two type, the inner type 7 or the one closer to the pivot of the type bar being the lower case type and the outer type 8 being the upper case. pivoted on a common pivot wire 9 which is mounted on a shiftable support or type bar se by a link 11 with the upper end of an up- Specification of Letters Patent.

The type bars, as shown, are

ent 10. Each type bar is connected TYPE-WRITING MACHINE.

Patented Aug. "7, 1191?.

Serial No. 22,032.

crumed in the rear portion of the base. The

type bar actuating mechanism is like that of the Monarch typewriter. The type bars are normally supported by a rest (not shown) which is in turn carried by horizontal arms 15 fixed to the segment 10. The platen and the type bar support are relatively shiftable in order to provide for using the upper and lower case types alternatively and in the present instance this relative shift is effected by shifting the segment l0 downward from a normal, lower case position to a lower and abnormal upper case position. Said se cut 10 is provided at its side with upright track members 16 which cooperate through anti-friction balls 17 with oppositely grooved track-Ways 18 secured to posts 19 fixed to and rising from the base 1. The sets of balls 17 at the sides of the segment are each controlled by a separator 20. For limiting up and down movements of the segment along the track-ways, stop devices are providd comprising at each side of the segment an upper stop 21 and a lower stop 22 both on the segment itself. Cooperating stop devices 23 and 24 are mounted on the posts 19. The stop devices 23 and 24 are essentially alike. Each is formed with a slot or kerf 25 preferably terminating in an enlarged opening 26. The slots 25 divide the stopping end of each of the devices 23 and 2d into tongues 27 and 28. The tongues 27 with which the stops mounted on the segment cooperate directly, are, because of this construction, somewhat yielding or resilient so that the noise and the jarring incident to the arrest of the segment at the ends of shifting movements are minimized. The body portions of the devices 23 and 24: are provided with elongated slots 29 which receive headed screws 30 by which each stop device is adjustably secured to the rear face of the amociate post 19. The stopping face of each tongue 27 is inclined to correspond with the inclined stopping face of the associate stop on the segment, the construction from the segment 10 one near each end thereof. Said devices comprise a pair of upright links or bars 32, the upper ends of which are pivotally connected by screws 33 to the outer faces of the lugs 31. The lower ends of said links are pivotally connected by screws 34 to the free ends of rearwardly extending crank arms 35, said crank arms being provided with hub portions 36 which fit over and are fixed to a rock shaft 37 bearing at its ends on pivot screws 38 se cured in the sides of the base 1. The segment shifting and locking devices with which my invention is more particularly concerned comprise short, forwardly extending crank arms 39 arranged one near each end of the rock shaft 37 and provided with hubs 40 which fit over and are pinned or otherwise secured to the rock shaft 37. Just inside each crank arm a curved arm 41 is arranged, said arm being provided at its forward end with a slot 42 which receives a headed locking screw 43 that is threaded into the contiguous arm 39, the arms 39 and 41 being thus adjustably secured together and so that the relation of the arm 41 with the rock shaft 37 may be varied. Said arm 41 is' cut out as indicated at 44 to fit over said rock-shaft and take a bearing thereon, thence curving up-ward, rearward and downward, its rear end carrying a pivot screw 45 on which is mounted a roller 46. Operative on the left-hand roller 46 are lugs 47 and 48 projecting downward respectively from shift key levers 49 and 50. These levers are fulcrumed at their rear ends on a pivot screw 51 which is supported in a U-shaped bracket 52 that is secured to a boss 1 on the rear portion of the base 1 by screws 53. Said bracket 52 has bent down from its forward side a guiding ear 54 provided with parallel slots 55 through which the levers 49 and 50 pass and by which they are guided. Each of said levers is provided with a coiled restoring spring 56 and the lever 49 has a key button 57 while the lever 50 has a key button 58. There is further provided a right-hand shift key lever 59 (Fig. 1) corresponding with the shift key lever 50 at the left, the lever 59 bearing on a pivot screw 60 supported by a fixed U-shaped bracket 61, which bracket is also provided with a slotted guide car 62. The lever 59 has a restoring pring and a key button (not shown) and is further provided with a lug or extension 59 which cooperates with the right-hand roller 46. The depression of the key 57 shifts the segment 10 downward and causes it to be locked in shifted position while the levers 50 and 59 control the temporary shift of the segment and'do not lock it down.

The shift locking devices comprise a latch 63 pivoted at 64 to the lever '49. The latch is substantially upright and its lower arm has connected to it one end of a draw spring 65, the opposite end whereof is anchored to the lever 49. This spring normally maintains the latch in contact with a stoppin 66 projecting laterally from the lever 50. This pin remains stationary when the lever 49 alone is depressed, such depression of the lever lowering the latch 63 and causing the draw spring to throw said latch under a fixed abutment or stop 67 secured by screws 68 to across bar 1 of. the base 1. The abutment hasdownward extensions or guiding lips 67 which loosely embrace the levers 49 and 50. To release the latch the key 58 is depressed, causing the pin 66 to swing downward in contact with the rear edge of the latch 63, acting as a cam against the lower ortion or arm of said'latch, camming or orcing the lower arm of the same forward against the spring 65 and swinging the upper end rearward clear of the locking abutment 67 It will be understood, of course, that the actuation of either of the temporary shiftlevers does not operatively affect the latching or locking device 63. When either of the shift key levers is actuated the rock shaft receives the pressure of the actuating or operating arm 41.

It will also be noted that one arm (39) only is mounted on the rock shaft, the other arm 41 being attached to the first mentioned arm 39. This arm 41 extends on opposite sides of the rock shaft, or crosses it, and at one end is adjustably attached to the arm 39 and at the opposite end is provided with a device that is acted upon by the shift. key levers. Between its ends the arm 41 takes'a bearing on the top of the rock shaft whereby it is prevented from bending under the action of the key levers. Such bending would change the prearranged dip of the key levers which of course would be objectionable. Moreover the bearing that the arm 41 takes on top of the rock shaft relieves the screw connection from excessive strains transmitted by the key levers.

Normally the segment 10 is maintained in its upper position as illustrated in Fig. 1, in which position the lower case types 7 are operative. The devices for thus maintaning the segment comprise spring means-consisting of a pair of draw'springs 69 each connected at its forward end to a pin 70 extending radially downward from the rock shaft 37. The rear ends of the springs 69 are adjustably anchored to screw hooks 71 threaded respectively into the inwardly projecting end portions of the screw pivots 51 and 60, these hooks being set in adjusted positions bylocking nuts 72 which are threaded on to the rear portions of the hooks and screwed up against the pivots 51.

If the shift key lever 50 be depressed as in Figs. 2 and 4:, then its lug 48 will act on the roller 46, depressing said roller and turning the rock shaft 37, stretching the draw or counterbalancing springs 69 and swinging the arms 35 downward,thereby lowering the bars 32 and permitting the segment 1O to slide downward in its bearings until arrested by the segment stops. In this position of the segment the upper case type 8 will be efi'ective. On releasing the lever 50 the segment and associate parts will be restored to normal position by the springs 69 and 56. The effect of operating the shift key lever 59 is the same. When, however, the lever 4:9 is operated the seg: ment will be locked down in its upper case position by the latching or looking devices as shown in Fig. 3 and as hereinbefore described.

It will be observed tha't'by my present inveution there are provided in combination a platen frame, a type supporting element or type bar segment, and means for effecting a relative shifting movement between said elements to change case, said means comprising a rock shaft, an arm fixed thereto, a second arm bearing on or supported by said rock shaft and having an adjustable connection with the first arm, and key controlled means operative on said second arm, said key controlled means in the present instance comprising'a shift key lever having a lug or projection that operates on a roller carried by the second arm; that a relative shift is effected in the present instance by moving the type bar segment, said segment being the case shifting element, while the platen or platen frame in the present instance is non-shifting; that the adjustable connection between the two arms aforesaid comprises a slot in one arm and a coiiperating screw carried by the other arm; that spring means are provided which act on the rock shaft aforesaid to normally maintain the segment or case shifting element in its uppermost position; that the 'key operated means or key lover and connections operate. to overcon-e said spring means and lower said segment to an abnormal position in which the upper case types are efiective;

rock shaft with said element, a crank arm fixed to said rock shaft, and a second arm extending across said rock shaft and being adjustably connected at one side of said rock shaft with said crank arm, said second arm also being provided at the opposite side of said rock shaft with a device that is acted on by said key lever, the construction being such that when the key lever is operated the rock shaft receives the pressure of said second arm.

2. In a typewriting machine, the combination of a case shifting element, a key lever, a rock shaft, devices for connecting said rock shaft with said element, a crank arm on said rock shaft, and a second arm extending across said rock shaft and bearing thereon, said second arm having at one side of said rock shaft a screw-and-slot connection with said crank arm, and at the opposite side of said rock shaft having a device on which said key lever is"'operative.

3. In a typewriting machine, the combination of a case shifting element, a key lever, and connections between said case shifting element and said key lever comprising a rock shaft connected to said element, a crank arm projecting from one side of said rock shaft, and a. second crank arm bearing on said rock shaft and having a slotted portion projecting from one side thereof, said slotted portion receiving a locking screw which is threaded into said first recited crank arm, said second crank arm having a curved portion projecting from the opposite -side of said rock shaft and terminating in 'a roller, said key lever having a projection operative on said roller.

4. In a typewriting machine, the combination of a shiftable element, a shift key lever, connections between said lever and said element'comprising a rock shaft, and: a device on which said lever is fulcrumed, said device comprising a U-shaped bracket provided with a pivot screw-pin, an integral extension at right angles to the sides of said bracket and slotted to provide a guide for said lever, aspring connected to said rock shaft at one end and constantly tending to turn said shaft in one direction, and a screw hook to which the opposite end of said spring is anchored, said hook being threaded into the projecting end of said pivot pin and being provided With a locking nut.

5. In a typewriting machine, the combination of a case shifting element, a rock shaft, crank arms 35 and 39 projecting from opposite sides of said rock shaft, a connection from said crank arm'35 to said shifting element, an operating arm adjustably secured at one end to the crank arm 39 and arranged to cross over to the opposite side of said rock shaft Where the other crank arm 35 is situated, a device on the free end of said operating arm, and a key 15 arranged to act on said device.

Signed at Syracuse, in the county of Onondaga, and State of New York, this 15th day of Apri1,A. D. 1915.

CHAS. J. BOND Witnesses:

ISAAC S. BERRY, J. F. KEBnINs, J r. 

